Now your esp8266 Seashell can stream MP3 radio stations, great! Now what about the ocean?

I've had great success with the orcasounds network (orcasound.net). Clicking on any of their "Listen" links downloads a file called playlist.pls. Open this file in Notepad, and you will see the address of the stream itself. For instance, the file looks like this:

[playlist]
numberofentries=1
File1=http://ice.stream101.com:8047/
Title1=SMRU Consulting Stream
Length1=-1
version=2

Now you know that the address of the stream is "http://ice.stream101.com"; and the port is 8047. This is the information you need to add the stream to the Ka-radio station list.

The Jupiter Foundation also hosts hydrophone streams (http://jupiterfoundation.org/). Unfortunately, they only stream while there are whales in their area, which is around December to April. The same system can be used to find the stream information.